Passive Optic Network (PON) provides a point-to-multipoint fiber connection between an optical line terminal at the operator's central office and multiple optical network units near customers. PON uses passive splitters to enable a single fiber to serve multiple premises, reducing network installation costs compared to point-to-point architecture. Major PON technologies include Ethernet PON (EPON), which uses Ethernet packet transmission, and Gigabit PON (GPON), which supports higher speeds of up to 2.5 Gbps downstream and 1.25 Gbps upstream. PON is increasingly seen as an affordable way to deliver high-speed broadband and triple-play services to both urban and rural areas.

1. Passive Optic Network
Presented by,
Manish Desai

2. Passive Optic Network
 Introduction
 Why PON
 PON advantages
 PON Types
 PON Establishment
 Multiplexing Techniques
 Main PON Systems
 Comparisons
 GPON in India
 Future Technologies in PON

3. Introduction
 Residential and small businesses demand for latest services and
application increased exponentially.
 Creating Bottleneck problem in tradition access networks.
 PON gives solution with its low cost of deployment.
 Point to multipoint single path connection using passive splitter,
Combiner, connectors.
 Saves maintenance cost, equipment distribution, power supply and
more optimal and efficient utilization of optic fiber set-up.
 Most economic network with optic fiber specifications.

4. Why PON
 HDTV, video telephony, Live TV, Gaming services demand.
 Higher bandwidth demand for these services.
 Improved service reliability and simplicity via PON.

5. PON Advantages
 1Gbps speed for <20km distance
 Broadcasting takes place in downlink.
 In uplink service channel shared by users.
 No power utilization in OF network as optic splitters used and no down
time risk.

6. PON Types

7. PON Establishment
 First ATM based PON also known as APON has transmission rate of
54Mbps.
 Introduced in 1990’s by FSAN for existing voice and phone services.
 APON was replaced by BPON due to increased bandwidth and new
services demand.
 Effective in LAN, MAN and backbone networks.
 But higher in cost and complex.
 Further to it EPON has higher success rate due to low cost and
simplicity, adapted in IP traffic network.
 GPON introduced after to it costs 10 times higher than EPON network.

8. Multiplexing Techniques
1. Wavelength Division Multiplexing-PON
Non-Standard
Costly Equipment
Separate wavelength for each ONU possible
Variation with temperature change occures
2. Time Division Multiplexing-PON
Standard
Less-costly
Broadcasting in TDM
Does not vary with temperature change

9. 1. WDM-PON

10. 2. TDM-PON

11. Main PON Systems
 APON and BPON rapidly replaced via EPON and GPON due to future
scope and services support.
 Mainly concentrating on EPON and GPON .

12. Ethernet PON
 EPON taking place in Asia region
Uses Packet data transmission scenario
Uses standard IEEE 802.3ah (1 Gb/s),IEEE 802.3av (10Gb/s)
Principle- Downstream direction, Upstream direction

13. Ethernet PON Architecture

14. EPON Downstream Direction Principle

15. EPON Upstream Direction Principle

16. Gigabit PON
Features-
Operational wavelength-downstream 1500nm
Upstream 1350nm
Open bandwidth allocation-SBA (static bandwidth allocation)
DBA (dynamic bandwidth allocation)
Hybrid of both EPON and ATM-PON
Data rate-downstream 2.5Gbps
Upstream 1.25Gbps
Enables Triple Play (video-audio-data), IPTV, Live TV.
Range-<60km without any Reapeter.

17. Gigabit PON Architecture

18. Comparisons

19. GPON in India
 NEW DELHI, December 5, 2011
 “The cost-effective GPON will prove to be a game-changer technology for
India…it can be used to provide triple play (voice, video and data). The present
GPON standards specify 2.5 Gbps (Gigabit per second) downstream and 1.25
Gbps upstream data capability to customer premise. Apart from urban areas,
especially multi-dwelling units, the large data carrying capability is important for
Indian villages too where prevailing low literacy levels will necessitate
information with greater graphic and audio content for better dissemination. It will
give a boost to broadband connectivity across India,”
_ Union Minister of Communications and IT Kapil Sibal .

20. Future Technologies in PON
 10GPON
 1-2Gbps
 Pre-existing 1GPON platform
 10GEPON
 1-10Gbps
 IEEE 800.3av
 An Amalgamation of CWDM & TDM
 Can established on Pre-existin 1GEPON optic fiber network, the only change is
to replace 1GEPON ONU to 10GEPON ONU

21. Thank You